Process for the treatment and recovery of tar and ammonia liquor from producer or other gas.



0. MOORE PROCESS fOR THE TREA TMENTAND RECOVERY OF TAB AND AMMONIALIQUOR FROM PRODUCER 0H O IHEWGAS.

"men- M mic nmgsmem. 1,215,300. Patented Feb. 6, 191 7 2 SHFETS- HEET l.

| I l l w l i l P Cl WITNESSES INYENTO R QM M, Wm 35 Y ATTORNEYS T0.M001R". T, PROCESS FOR THE TREATMENT AND RECOVERY OF TAR AND AMMDNI ALI U08 FROM PRODUCER OR OTHER GAS.

APPLTCATIDN FIR-ED JAN-26, I915- Patente'l 6, i

l/VYE'IVTOR unvT/N M 00R:

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'thegasthen cooled. r l .Thetar, and theflconde'nsedsteam after reachingthe. condenser chests from the tar -;extraetor.- flow .backtherethroughto an exit 45ynearu-tlie entranc'e for the gases; 1 In the UNITED STATESPATEN'J. omen.

eUInrInMoonE, or RIDDRIE, GLASGOW, SGJTLAND.

rnoonss non THE TR ATMENT AND RECOVERY or TAB AND AMMONIA mouon' FROM Irnonucnn on ornnn GAS.

To all whom it may concern:

Be it :known that I, Qumrnxi Moonn, a subject of the King-of GreatBritain and Ireland, -and a resident of Riddrie, Glasgow, Scotland, haveinvented a certain-new and usefullmproved Process foithe Treatment and-Recovery of Tar and AmlnoniaLiquor from.Producer or. other Gas, ofWhich-the following is" the speeificetion.

Thisj'inventionhas for its object to provide an improved process ofplant for the treatinentand recovery oftar and ammonia liquor fromproducer or other gas, and is such that uniform and dehydrated tar andhighly concentrated ammonia liquor are obtained;.,. I 1 V Acclirding tothe invention the gas leaving I the producer or retorts is led into oneor more airor Water-cooled'condensers Where-- in its temperature isreduced to a temperature most suitable for the extraction of theetarthis temperature mnging between about 100 and -16Q degreesFahrenheitin accord anoe vwith the quality of the tar present. Fr'omthecondenser chest or chests, the gas.

passes to any convenient form of tar ex traetor..;which is arranged. atsuch a higher I levelthan the chests *of the, condensers: that tar: andWater otcondensationfrom the extractor may flow back to the chests asherein- .a terlexplained- Thewgas after leaving the tar extractor mayeither be furthercooled to atmospheric temperature-in any convenientform Orto densenzprevious; to being treated by the water ofcondensationfr'om .thecondenser chests do! the extraction of the ammonia(this; wa-

' ter of condensationheing first cooled as hereinafter explained 401'the ammonia may first be: extracte course 015 passingthrough thechestslin afdi rection contrary to} the flow of the gases-the tax-whichisipartially suspende'din a globu- -=lar form in the waterjcomes intocontact ,with the. hot gases. It is thereby so thor- '1 oughly; heatedthat dehydration takes place,

: companying sheets of in an acid bath and I I rom the second chest "3of the 'co'ndendi the Patented Feb. 6,1917.

Application filedfi'enuaryEB, 1915. Seria1No.-4,503,

while the light anfi. heavy tars are thoroughly mixed and a tar cfuniform consistency obtained.

The tar and. the virgin liquor (thatis the water of condensation fromthe gases) pass from the condensers into a separator of any suitableknown construction and are auto matically separated by decantation, thetar passing to the tar well.

'The virgin liquc r overflows from the; sepae rator into a heatexchanger 'n'eferably in the form of a tanl: fitted'with a coil; ofpiping. through whiih cold water is passed.

The virgindiquor gives up its heat to the Water, and. the water thusheated may be used asthe supply for a usual water-jacket surrounding the1; reducer, thus facilitating-- the production of uteam in that jacket.

The 'nowcooled virgin liquor is led to a tower, to which the cooledgases are also led, the liquor and gases passing through this toweriuopposite directions, so that the ammonia is thorough y'washed from thegas by this liquor, and as. the latter is thoroughly cooled before itenters the washing tower, a strong annnonia liquor solution is obtained.

lVhere the gas is furthereooledlafter leaving'the tar extractor andbefore it reaches "the washing t-()WQ1",*tl'lB water of condensation'from these condensers is led bzickto the chest or'chests of ihe firstsetof condensers,

so that all the vi] gin liquor is collected at one place.

'Two examples oi' typi cal apparatus for the carryinglout of theimproved process are diagrammatically illustrated on the acplan of oneexam ple, while Figs. 3 and 4: are smular views s iowlnga secondexample.

explanatory drawings Figure l being an; elevation and Fig. 2 111' In theexample ofiapparatus shown in Figs. 1 and 2 tl1e-; ;asffr0m the produceror retorts enters by a connection A and passes to an air cooled ccndenser wherein its ternthat satisfactory :For theextractionof" its,tar. r

sistsof two chests B, B connected {to ether by vertical pipes (l andheaders C 5*; perature is reduce has already set forthlto may be of anyThis extractor is'arranged at such a higher f thoroughly heated thatcondensation from. theto the water,

I passing from the the heat exchan er Kto'a sump" K to which the gasfrom a final horizontal main L connected with the sec- I gether washedfrom thegasby this liquor,

gases pass'bv pipe connections D to a hori zontal main D opcning at oneend into the lower end of a tar extractor E, which convenient knownform.

level than the chests of the condenser that tar and Water ofcondensation from the extractor flow back to the: second chest 13 by,

a pipe Connection E The E is led by pipe connections G, G? to a sec ondhorizontal'main G from which it passes by further pipe connections G to.the first chest of a, second atmospheric condenser H, H similar nconstruction to thefirst condenser.

The tar and water of condensation from this second condenser pass backby a pipe H E leading from the tar extractor to the secand. chest B ofthe first condenser. The

, tar and condenser steam flow back through the two chests of the firstcondenser in a direction contrary tothe How of the gases, and the. tartherefore comes into contact with the hot gases. It is thereby ,sodehydration takes place, While the'light and heavy, tars are thus alsothoroughly mixed and a tar of uniform consistencytobtained.

The tar and water of condensation from the gases pass from the firstchest of the first-condenser by a'pipe H struction, and they are thereautomatically separated by decantation. The tar well or storage tank.

The virgin liquor (that is the water of gases) overflows from theseparator J into cold water is The virgin liquor .gives up its heat andthe water-thus heated may be used as the supply for a usualwater passejacket surrounding the producer, the water exchanger by a 'pipe "J tothe-water jacket. 'Thus the producheat tion of steami n that. jacket isfacilitated.

J The 116w cooled virgin liquor is led from J fby a pipe connection 1beneath gas scrubbers or towers K ond chest H of the second atmosphericconydens'er is also led--.by pipe connections L,

L. The two scrubbers are connected in" known manner by intermediate pipeconnections L3 and the liquor is pumped as usual from thesump K to thetop of'the,

scrubbers. Thus the liquor and 'gasespass through the tower in oppositedirections.

The ammonia" is there ore thoroughly gas after leaving the tar extractorwith the mpg-connection 20 it is treated, in

tension N shut off when desired and of course when I the acid tower isin use the valve connection into a sepa-= rator J which is of anysuitable known con- PasseS from this separator-by a .pipe J to a tar aheat exchanger "J in the-form of a tank in which is= a coil of pipingthrough which andas the latter is thoroughly cooled before it leadi fromthe extractor to the horizontal main Normally the valve connection M'isclosed and the othervalves referred to open, butin the event of itbeing necessary to shut off vthe tar'extractor for examination orrepair, thevalve Mis opened and the other shit. When this is the case,the tar extractor is cut out, the gas passingdirectly from. thefirstc'ondenser to the second.

The example of the apparatus shown in Figs. 3 and 4 diifers from thathereinbefore described only in that the gas, after lea v- 'ing the tarextractor E, passes by pipe connections N, N to an acid tower Nwhereknownv manner, for the extraction of the ammonia. therefrom. From the.acid tower the gas passes by the further pipe connection N 3 to anextension N on the Second horizontal main G after which it passesthrough the second atmospheric condenser, H, H, to be cooled, asdescribed.

Valve connections'are fitted in the pipeconnection N and'between it andthe ex.- so that the acidtower may-be between the pipes G, G, is closed.

What I claim is j g 1. Process for thetreatment and recovery of tar andammonia liquor from producer the gas is first cooled andother. gas inwhich v p in condensers to a temperature suitable for the extractionfrom it oftar and is then led through a taxextractor from which tar andwater of condensation fiow back to the condenser and travel thereingenerally op.- positetothe'flow of the gas, the gas after lavingtheextractor being further cooled,

. iho' tarand liquor leaving the condensers being separated and'theliquor cooled and used in towers'o'r-scrubbers towa'sh the gases asdescribed.

2.. Process for the treatment and recovery of tar and ammonia liquorfrom producer and other gas in which the gas is first cooled incondensers to atemperaturesuitable for the extractionfrom. itof tar.and'is then led 12f through a tar extractor-from which tar and water ofcondensation flow back tothe j generallyopposite denser and traveltherein to the'flow'of the gas, the gasafter leaving the extractor'beingtreated in an acid bath andthh further'cooled, the tar and liquorleaving the-condensers-being separated and the, liquor cooled. 3. Theprocess .for; recovering tar from hot gas,

which consistsjin coolingi the gas, I!

leaiiingWhe' cooled gas through a. tar extractor, lea "the extracted tarback into cbntact with t e hot'gasesin the condenser whereby the ta'ristiteo'laydmted-and the light 5 heavy tars miandrecoveringthe'thiisfidehydi'ated' tax: in mammotpm'-f tar [from and 160? 'tsr beckinto consists in, eoolm' g the'gas led fllrough' etar ex I contact withthe hot gases in the condenser whereby the tar is dehydrated ind thelight and heavy tars mixed and recovering the ll thus dehydrated tar ina condition of precticully uniform consistency.

In testimony wherecf I have signed my name to this speeificati )n in thepresence of two subscribing witne: ses.

y QIINTIN MOORE. Witnesses:

DA ID FERGUSON Wmm'nn HUNT.

